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17 Cards in this Set

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Isostasy
Equilibrium of the earth's crust. Pressures from every side are equal.
Lithification
The process in which sediment is converted into rock by cementation/compaction
Horst
Uplifted block of rock layers in between two faults. AKA block mountain
Nuees Ardentees
Pyroclastic flows of super-heated-denser-than-air gas
Basalt
A dark coloured extrusive igneous rock usually found in ocean crust. Forms sea floors.
Travertine Terrace
Calcium mineral deposits often found around hot springs and geysers.
Tear Fault
A crack in the earth where only horizontal movement of rock occurs. AKA transform fault, strike-slip fault
Lahar
Volcanic mudflows that occur on continental volcanoes.
Shield
Ocean volcanoes with very gentle slopes, composed of basaltic lava.
Andesite
Lava found on continental volcanoes. It forms very steep-sided slopes.
Graben
A downshifted block of rock layers in between two faults. AKA rift valley
Sill
Formed when igneous rock intrudes between rock layers.
Laccolith
A pooling of magma between rock layers.
Moho
The lithosphere-asthenosphere boundary. It lies almost entirely within the lithosphere, under mid ocean ridges.
Batholith
The largest of igneous rock intrusions, They form the core of many of the earth's great mountain ranges.
Gabbro
Oceanic volcanic rock with large crystals
Anthracite
A fossil fuel containing almost pure coal.